© A fence is to house a lot having an equilateral trianglular shape with area T having a side length of 10 m, annexed to a square lot of area S at one side of the triangle without fencing the annexed side. Find the cost of the fence if one meter costs $100.
(d) Find the total area ( S and T ) that the fence is housing.
(e) Repeat parts c and d above if the annexed side is to be fenced also.
(f) If the area the triangle lot T where to be exchanged for another square lot of equal area W, find the side b of the area W .
(g) Expand the following expressions.
(i) (a – 3b)4
(ii) (2/x + y/3)3/ (x+ 1/y)